Main shaft protection structure of numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool spindle protection structure, which belongs to the technical field of numerical control machine tool spindles and comprises a base, a shielding frame fixedly connected to the top of the base, a machining table fixedly connected to the bottom of the inner wall of the shielding frame, and four supporting frames arranged on the top of the machining table. A rotating shaft is rotatably connected to the bottom of the supporting frame, a connecting shaft is fixedly connected to the bottom of the rotating shaft, a shaft center is arranged at the bottom of the connecting shaft, a protective cover is arranged at the bottom of the connecting shaft, a protective mechanism is arranged at the bottom of the protective cover, and a fixing mechanism is arranged at the bottom of the supporting frame; and the protection mechanism comprises a rotating sleeve, a connecting sleeve, two limiting blocks, a labyrinth type protection frame and a first fixing sleeve, and the problems that a large amount of cuttings are generated in the working process after the main shaft is replaced in the prior art, the splashed cuttings easily enter the area of the main shaft, cleaning is difficult, and therefore the precision and the service life of the main shaft are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine tool spindles, and particularly relates to a protection structure for a CNC machine tool spindle. Background Art

[0002] The spindle of a CNC machine tool is one of the core components of the machine tool, and its performance directly affects the machining accuracy, efficiency and reliability of the machine tool.

[0003] For some existing fixing components of the spindle mechanism of a CNC machine tool, the spindle mechanism of the CNC machine tool cannot be fixed quickly, which increases the fixing time of the spindle mechanism of the CNC machine tool, reduces the efficiency during the replacement and maintenance of the spindle mechanism of the CNC machine tool, and cannot fix the spindle mechanism of the CNC machine tool in all directions, resulting in easy shaking of the spindle mechanism during operation, and reducing the machining accuracy of the spindle mechanism of the CNC machine tool;

[0004] The existing patent (publication number: CN217096870U) discloses a fixing component for a spindle mechanism of a CNC machine tool, which relates to the technical field of CNC machine tools. The fixing component for the spindle mechanism of the CNC machine tool includes a circular plate and a fixing mechanism. A fixing plate is fixedly installed at the bottom of the circular plate. The fixing mechanism includes a motor and a rotating gear. The front side of the motor is fixedly installed with the rear side of the fixing plate. The output shaft of the motor extends to the front side of the fixing plate through a coupling and is fixedly connected with the rear side of the rotating gear. With the cooperation of the motor, the rotating gear, the disc, the hinged plate, the connecting plate, the connecting sleeve and the bent plate, this fixing component for the spindle mechanism of the CNC machine tool does not require manual fixing of the spindle mechanism by the staff, helps the staff reduce the workload, improves the work efficiency, can quickly fix the spindle mechanism of the CNC machine tool, reduces the fixing time of the spindle mechanism of the CNC machine tool, and improves the efficiency during the replacement and maintenance of the spindle mechanism of the CNC machine tool.

[0005] In view of the above problems, the existing patent gives a solution. However, there are certain limitations in the above solution. During the work process after replacing the spindle, a large amount of chips will be generated, and the flying chips are easy to enter the spindle area and are difficult to clean, which will affect the accuracy and service life of the spindle.

[0006] Therefore, a protection structure for a CNC machine tool spindle is proposed. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a protection structure for a CNC machine tool spindle, which can solve the problem that during the work process after replacing the spindle, a large amount of chips will be generated, the flying chips are easy to enter the spindle area and are difficult to clean, which will affect the accuracy and service life of the spindle.

[0008] To achieve the above object, the present utility model provides the following technical solutions: A spindle protection structure for a numerical control machine tool, including a base, a shielding frame is fixedly connected to the top of the base, a processing table is fixedly connected to the bottom of the inner wall of the shielding frame, four support frames are arranged on the top of the processing table, a rotating shaft is rotatably connected to the bottom of the support frame, a connecting shaft is fixedly connected to the bottom of the rotating shaft, a shaft center is arranged at the bottom of the connecting shaft, a protective cover is arranged at the bottom of the connecting shaft, a protection mechanism is arranged at the bottom of the protective cover; a fixing mechanism is arranged at the bottom of the support frame;

[0009] The protection mechanism includes a rotating sleeve, a connecting sleeve, two limiting blocks, a labyrinth protection frame and a first fixing sleeve. The surface of the rotating sleeve is rotatably connected to the inside of the protective cover. The surface of the connecting sleeve is fixedly connected to the inside of the rotating sleeve. One side of the limiting block close to the connecting sleeve is fixedly connected to the connecting sleeve. The surface of the labyrinth protection frame is fixedly connected to the inside of the first fixing sleeve. The top of the first fixing sleeve extends into the inside of the connecting sleeve and is threadedly connected to the inside of the connecting sleeve.

[0010] Preferably, a fixing frame is arranged at the bottom of the support frame. A second fixing sleeve is fixedly connected to the surface of the fixing frame. A first sealing ring is fixedly connected to the bottom of the second fixing sleeve.

[0011] Preferably, a second sealing ring is fixedly connected to the surface of the fixing frame. The surface of the second sealing ring is in close contact with the inner wall of the support frame.

[0012] Preferably, a fixing plate is arranged at the bottom of the fixing frame. The bottom of the fixing plate is fixedly connected to the top of the protective cover.

[0013] Preferably, two limiting grooves are formed on the surface of the connecting shaft. One side of the limiting block close to the limiting groove extends into the inside of the limiting groove and is in contact with the inside of the limiting groove.

[0014] Preferably, a third sealing ring is fixedly connected to the inside of the labyrinth protection frame. The inside of the third sealing ring is in close contact with the surface of the rotating shaft center.

[0015] Preferably, a fixing groove is formed at the bottom of the fixing frame. The top of the fixing plate extends into the inside of the fixing groove and is fixedly connected to the inside of the fixing groove.

[0016] Preferably, a limiting ring is fixedly connected to the surface of the fixing plate. The top of the limiting ring is in contact with the bottom of the fixing frame.

[0017] Preferably, a connecting groove is formed at the bottom of the support frame. The surface of the second fixing sleeve is threadedly connected to the inside of the connecting groove.

[0018] Preferably, a motor is fixedly connected to the top of the support frame, and the bottom of the output shaft of the motor extends into the support frame and is fixedly connected to the top of the rotating shaft.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. In this application, the connecting sleeve drives the limiting block to move into the limiting groove for limiting, and then the top of the first fixing sleeve extends into the connecting sleeve and is threadedly connected to the inside of the connecting sleeve, so as to conveniently drive the labyrinth protection frame to be fixed inside the protective cover. When the surface of the axis contacts the inside of the labyrinth protection frame, it is convenient for the labyrinth protection frame to seal the axis and the connecting shaft inside the protective cover through the third sealing ring, thus facilitating the protection of the protective cover.

[0021] 2. In this application, the fixing frame drives the second fixing sleeve to move into the connecting groove for fixing, thereby driving the fixing plate to move, limiting the limiting ring, and enabling the fixing plate to fixedly support the protective cover, so as to conveniently seal and protect the inside of the connecting groove through the first sealing ring and the second sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structure diagram of the spindle protection structure of the numerical control machine tool of the present utility model;

[0023] Figure 2 is the three-dimensional connection schematic diagram of the second fixing sleeve and the connecting groove of the present utility model;

[0024] Figure 3 is the three-dimensional connection schematic diagram of the fixing plate and the fixing groove of the present utility model;

[0025] Figure 4 is the three-dimensional connection schematic diagram of the fixing mechanism of the present utility model;

[0026] Figure 5 is the three-dimensional connection schematic diagram of the protection mechanism of the present utility model.

[0027] In the figure, 1, base; 2, processing table; 3, support frame; 4, shielding frame; 5, protective cover; 6, rotating shaft; 7, connecting shaft; 8, protection mechanism; 801, rotating sleeve; 802, connecting sleeve; 803, limiting block; 804, labyrinth protection frame; 805, first fixing sleeve; 9, fixing mechanism; 901, fixing frame; 902, second fixing sleeve; 903, first sealing ring; 904, second sealing ring; 905, fixing plate; 10, axis; 11, fixing groove; 12, limiting ring; 13, limiting groove; 14, third sealing ring; 15, connecting groove; 16, motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0030] A spindle protection structure for a numerical control machine tool, including a base 1. A shielding frame 4 is fixedly connected to the top of the base 1. A processing table 2 is fixedly connected to the bottom of the inner wall of the shielding frame 4. Four support frames 3 are arranged on the top of the processing table 2. A rotating shaft 6 is rotatably connected to the bottom of the support frame 3. A connecting shaft 7 is fixedly connected to the bottom of the rotating shaft 6. A spindle center 10 is arranged at the bottom of the connecting shaft 7. A protective cover 5 is arranged at the bottom of the connecting shaft 7. A protection mechanism 8 is arranged at the bottom of the protective cover 5. A fixing mechanism 9 is arranged at the bottom of the support frame 3;

[0031] The protection mechanism 8 includes a rotating sleeve 801, a connecting sleeve 802, two limit blocks 803, a labyrinth protection frame 804 and a first fixing sleeve 805. The surface of the rotating sleeve 801 is rotatably connected to the inside of the protective cover 5. The surface of the connecting sleeve 802 is fixedly connected to the inside of the rotating sleeve 801. One side of the limit block 803 close to the connecting sleeve 802 is fixedly connected to the connecting sleeve 802. The surface of the labyrinth protection frame 804 is fixedly connected to the inside of the first fixing sleeve 805. The top of the first fixing sleeve 805 extends into the inside of the connecting sleeve 802 and is threadedly connected to the inside of the connecting sleeve 802.

[0032] In this embodiment: By arranging the protective cover 5 on the surface of the connecting shaft 7, it is convenient to fix the protective cover 5 to the rotating sleeve 801, so that the rotating sleeve 801 can conveniently fix the limit block 803 through the connecting sleeve 802, and the surface of the labyrinth protection frame 804 is fixedly connected to the inside of the first fixing sleeve 805. Thus, it is convenient for the top of the first fixing sleeve 805 to extend into the inside of the connecting sleeve 802 and be threadedly connected to the inside of the connecting sleeve 802, so as to conveniently fix the labyrinth protection frame 804 inside the protective cover 5. The surface of the spindle center 10 contacts the inside of the labyrinth protection frame 804, so that the labyrinth protection frame 804 can conveniently seal the spindle center 10 and the connecting shaft 7 inside the protective cover 5, thereby facilitating the protection of the protective cover 5.

[0033] Specifically, such as Figure 1 , Figure 2 , Figure 4As shown, a fixing bracket 901 is provided at the bottom of the support bracket 3. A second fixing sleeve 902 is fixedly connected to the surface of the fixing bracket 901, and a first sealing ring 903 is fixedly connected to the bottom of the second fixing sleeve 902.

[0034] Specifically, as Figure 2 、 Figure 4 shown, a second sealing ring 904 is fixedly connected to the surface of the fixing bracket 901, and the surface of the second sealing ring 904 is in close contact with the inner wall of the support bracket 3.

[0035] Specifically, as Figure 2 、 Figure 3 、 Figure 4 shown, a fixing plate 905 is provided at the bottom of the fixing bracket 901, and the bottom of the fixing plate 905 is fixedly connected to the top of the protective cover 5.

[0036] In this embodiment: By fixedly connecting the bottom of the fixing plate 905 to the top of the protective cover 5, it is convenient to fixedly support the protective cover 5, achieving the effect of fixedly supporting the protective cover 5.

[0037] Specifically, as Figure 5 shown, two limiting grooves 13 are formed on the surface of the connecting shaft 7, and one side of the limiting block 803 close to the limiting groove 13 extends into the limiting groove 13 and is in contact with the inside of the limiting groove 13.

[0038] Specifically, as Figure 5 shown, a third sealing ring 14 is fixedly connected inside the labyrinth protection frame 804, and the inside of the third sealing ring 14 is in close contact with the surface of the center of the rotating shaft 6.

[0039] In this embodiment: By making the inside of the third sealing ring 14 in close contact with the surface of the center of the rotating shaft 6, it is convenient for the third sealing ring 14 to seal and protect the center 10 through the labyrinth protection frame 804, achieving the effect of sealing the center 10.

[0040] Specifically, as Figure 3 shown, a fixing groove 11 is formed at the bottom of the fixing bracket 901, and the top of the fixing plate 905 extends into the fixing groove 11 and is fixedly connected to the inside of the fixing groove 11.

[0041] Specifically, as Figure 3 shown, a limiting ring 12 is fixedly connected to the surface of the fixing plate 905, and the top of the limiting ring 12 is in contact with the bottom of the fixing bracket 901.

[0042] In this embodiment: By making the top of the limiting ring 12 in contact with the bottom of the fixing bracket 901, the limiting ring 12 can limit the fixing plate 905, achieving the effect of limiting the fixing plate 905.

[0043] Specifically, as Figure 2 shown, a connection groove 15 is formed at the bottom of the support frame 3, and the surface of the second fixing sleeve 902 is threadedly connected to the inside of the connection groove 15.

[0044] Specifically, as Figure 2 shown, a motor 16 is fixedly connected to the top of the support frame 3, and the bottom of the output shaft of the motor 16 extends into the support frame 3 and is fixedly connected to the top of the rotating shaft 6.

[0045] In this embodiment: By threadedly connecting the surface of the second fixing sleeve 902 to the inside of the connection groove 15, it is convenient to fix the second fixing sleeve 902 by the support frame 3 through the connection groove 15, achieving the effect of fixing the second fixing sleeve 902.

[0046] Working principle: When installing the protective cover 5, the fixing frame 901 drives the second fixing sleeve 902 to move into the connection groove 15 for fixation, thereby driving the fixing plate 905 to move, limiting the position of the limiting ring 12, and enabling the fixing plate 905 to fixedly support the protective cover 5. Thus, it is convenient for the first sealing ring 903 and the second sealing ring 904 to seal and protect the inside of the connection groove 15, and it is convenient to fix the protective cover 5 to the rotating sleeve 801. Thereby, it is convenient for the protective cover 5 to drive the connecting sleeve 802 to move through the rotating sleeve 801. Then, it is convenient for the connecting sleeve 802 to drive the limiting block 803 to move into the limiting groove 13 for limiting. Then, the top of the first fixing sleeve 805 extends into the connecting sleeve 802 and is threadedly connected to the inside of the connecting sleeve 802, which is convenient to drive the labyrinth protection frame 804 to be fixed inside the protective cover 5, making the surface of the shaft center 10 contact with the inside of the labyrinth protection frame 804. Thus, it is convenient for the labyrinth protection frame 804 to seal the shaft center 10 and the connecting shaft 7 inside the protective cover 5 through the third sealing ring 14, thereby facilitating the protection of the protective cover 5, and solving the problem that a large amount of chips will be generated during the process of working after replacing the main shaft in the prior art. The flying chips are likely to enter the main shaft area and are difficult to clean, which will affect the accuracy and service life of the main shaft.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spindle protection structure for a numerically controlled machine tool, comprising a base (1), a shielding frame (4) being fixedly connected to the top of the base (1), characterized in that: The bottom of the inner wall of the shielding frame (4) is fixedly connected to a processing table (2), the top of the processing table (2) is provided with four support frames (3), the bottom of the support frame (3) is rotatably connected to a rotating shaft (6), the bottom of the rotating shaft (6) is fixedly connected to a connecting shaft (7), the bottom of the connecting shaft (7) is provided with an axis (10), the bottom of the connecting shaft (7) is provided with a protective cover (5), the bottom of the protective cover (5) is provided with a protective mechanism (8), and the bottom of the support frame (3) is provided with a fixing mechanism (9); The protective mechanism (8) comprises a rotating sleeve (801), a connecting sleeve (802), two limiting blocks (803), a labyrinth-type protective frame (804) and a first fixed sleeve (805); the surface of the rotating sleeve (801) is rotatably connected to the interior of the protective cover (5); the surface of the connecting sleeve (802) is fixedly connected to the interior of the rotating sleeve (801); a side of the limiting block (803) close to the connecting sleeve (802) is fixedly connected to the connecting sleeve (802); the surface of the labyrinth-type protective frame (804) is fixedly connected to the interior of the first fixed sleeve (805); and the top of the first fixed sleeve (805) extends to the interior of the connecting sleeve (802) and is threadedly connected to the interior of the connecting sleeve (802).

2. The CNC machine tool spindle protection structure according to claim 1, characterized in that: A fixing frame (901) is provided at the bottom of the support frame (3); a second fixing sleeve (902) is fixedly connected to the surface of the fixing frame (901); and a first sealing ring (903) is fixedly connected to the bottom of the second fixing sleeve (902).

3. A CNC machine tool spindle protection structure according to claim 2, characterized in that: The surface of the fixing frame (901) is fixedly connected to the second sealing ring (904), and the surface of the second sealing ring (904) is in close contact with the inner wall of the supporting frame (3).

4. The CNC machine tool spindle protection structure according to claim 2, characterized in that: A fixing plate (905) is provided at the bottom of the fixing frame (901), and the bottom of the fixing plate (905) is fixedly connected to the top of the protective cover (5).

5. The CNC machine tool spindle protection structure according to claim 1, characterized in that: Two limiting grooves (13) are provided on the surface of the connecting shaft (7), and a side of the limiting block (803) close to the limiting groove (13) extends to the inside of the limiting groove (13) and contacts the inside of the limiting groove (13).

6. The CNC machine tool spindle protection structure according to claim 1, characterized in that: A third sealing ring (14) is fixedly connected to the interior of the labyrinth protection frame (804), and the interior of the third sealing ring (14) is in close contact with the surface of the center of the rotating shaft (6).

7. A CNC machine tool spindle protection structure according to claim 4, characterized in that: A fixing groove (11) is provided at the bottom of the fixing frame (901), and the top of the fixing plate (905) extends into the interior of the fixing groove (11) and is fixedly connected to the interior of the fixing groove (11).

8. The CNC machine tool spindle protection structure according to claim 4, characterized in that: A limiting ring (12) is fixedly connected to the surface of the fixing plate (905), and the top of the limiting ring (12) is in contact with the bottom of the fixing frame (901).

9. The CNC machine tool spindle protection structure according to claim 2, characterized in that: A connecting groove (15) is provided at the bottom of the support frame (3), and the surface of the second fixing sleeve (902) is connected to the inner thread of the connecting groove (15).

10. The CNC machine tool spindle protection structure according to claim 1, characterized in that: The top of the support frame (3) is fixedly connected to a motor (16), and the bottom of the output shaft of the motor (16) extends into the interior of the support frame (3) and is fixedly connected to the top of the rotating shaft (6).

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